On a wave … Sea Siren works out in Hong Kong, where she will attempt to become the first Australian galloper to win the Hong Kong International Sprint since Falvelon in 2001. Photo: Getty Images

''She has had a good week,'' he said. ''We can't do anything more, now we just have to find out if she is good enough. We understand how hard it is to come here and beat their sprinters on their track. History shows that.''

Falvelon was the latest Australian sprinter to win in Hong Kong when he went back-to-back winning the International Sprint in 2001.

Sea Siren is a first international runner for owner Keith Biggs, who shared ownership of Melbourne Cup winner Doriemus, and there are plans to take her to Royal Ascot next year if she measures up on Sunday.

She has already won three group 1s: the BTC Cup and Doomben 10,000 in the winter before taking out the Manikato Stakes first-up at Moonee Valley, and then was run down by Mental in the Patinack Classic at Flemington.

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''The program was focused on getting her here at her peak and that's why we only had the two runs at home,'' O'Shea said. ''She travelled well and gives me the feeling she is perfect.''

The Fastnet Rock mare impressed regular partner Jim Cassidy when he saw her at the track on Friday. ''She looks incredible and she'll run the same,'' Cassidy said. ''I don't think I've seen her look better or fitter, they've done a super job with her over here.''

Sea Siren is a $3 favourite for the sprint after drawing barrier seven, in front of defending champion Lucky Nine, which has the outside draw of 12. ''From that barrier we should end up where we want to be,'' O'Shea said.

''There is good speed to take us across and we should end up one off [the fence]. I'm sure she will be better around a turn [than down the straight in the Patinack Classic] and if she can get into position just off the speed, it should advantageous given the style of racing over here.''

Sea Siren's stablemate in quarantine Alcopop will be the other Australian representative in the feature of the program, the Hong Kong International Cup. It is a huge jump for his trainer, Victor Harbor's Jake Stephens, who has mixed with the elite from around the world this week.

''It's a bit daunting, going into the barn every morning and working alongside the sort of people who are here,'' Stephens said.

''But it's fantastic, and the horse is going so well. He's been working well, recovering well, loving the surface, changing legs as required, he's balanced. He's so good it's really making me nervous.''

Craig Williams will take the ride on Alcopop, which is a $10 chance, against defending champion California Memory, the $3 favourite, and the Queen's steed Carlton House, which will be trained by Gai Waterhouse after his run in Hong Kong.

The day was robbed of another drawcard when Hardwicke Stakes winner Sea Moon was scratched from the Vase on Saturday. Williams will team with Melbourne Cup winner Dunaden in the Vase, a race he won last year in his all-conquering tour of Australia and Asia.

There were excuses for his poor performance in this year's Melbourne Cup with the stable reporting he had a muscle problem after his run at Flemington last month. He has been freshened up as he drops back to 2400m.

''He gave me a very similar feel as he did leading into the Caulfield Cup this year,'' Williams said after riding him this week. ''He's fresh which he needs to be as he's coming back in trip for this race.''